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Finding the Fourth Proportional to 159,881.87, 220,637.46 and 87,284.88

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Solution

The fourth proportional to 159,881.87, 220,637.46 and 87,284.88 is: 120,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,881.87 : 220,637.46 = 87,284.88 : x
  2. Step 2: Convert to fraction form
    159,881.87/220,637.46 = 87,284.88/x
  3. Step 3: Cross multiply
    159,881.87x = 220,637.46 × 87,284.88
  4. Step 4: Simplify right side
    159,881.87x = 19,258,314,219.60
  5. Step 5: Solve for x
    x = 19,258,314,219.60/159,881.87
  6. Step 6: Final answer
    x = 120,453.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.